<?php
/**
 * Smarty plugin
 * @package Smarty
 * @subpackage plugins
 */


/**
 * Smarty escape modifier plugin
 *
 * Type:     modifier<br>
 * Name:     escape<br>
 * Purpose:  Escape the string according to escapement type
 * @link http://smarty.php.net/manual/en/language.modifier.escape.php
 *          escape (Smarty online manual)
 * @author   Monte Ohrt <monte at ohrt dot com>
 * @param string
 * @param html|htmlall|url|quotes|hex|hexentity|javascript
 * @return string
 */
function smarty_modifier_escape($string, $esc_type = 'html', $char_set = 'ISO-8859-1')
{
	switch ($esc_type) {
		case 'html':
			return htmlspecialchars($string, ENT_QUOTES, $char_set);

		case 'htmlall':
			return htmlentities($string, ENT_QUOTES, $char_set);

		case 'url':
			return rawurlencode($string);

		case 'urlpathinfo':
			return str_replace('%2F','/',rawurlencode($string));

		case 'quotes':
			// escape unescaped single quotes
			return preg_replace("%(?<!\\\\)'%", "\\'", $string);

		case 'hex':
			// escape every character into hex
			$return = '';
			for ($x=0; $x < strlen($string); $x++) {
				$return .= '%' . bin2hex($string[$x]);
			}
			return $return;

		case 'hexentity':
			$return = '';
			for ($x=0; $x < strlen($string); $x++) {
				$return .= '&#x' . bin2hex($string[$x]) . ';';
			}
			return $return;

		case 'decentity':
			$return = '';
			for ($x=0; $x < strlen($string); $x++) {
				$return .= '&#' . ord($string[$x]) . ';';
			}
			return $return;

		case 'javascript':
			// escape quotes and backslashes, newlines, etc.
			return strtr($string, array('\\'=>'\\\\',"'"=>"\\'",'"'=>'\\"',"\r"=>'\\r',"\n"=>'\\n','</'=>'<\/'));

		case 'mail':
			// safe way to display e-mail address on a web page
			return str_replace(array('@', '.'),array(' [AT] ', ' [DOT] '), $string);

		case 'nonstd':
			// escape non-standard chars, such as ms document quotes
			$_res = '';
			for($_i = 0, $_len = strlen($string); $_i < $_len; $_i++) {
				$_ord = ord(substr($string, $_i, 1));
				// non-standard char, escape it
				if($_ord >= 126){
					$_res .= '&#' . $_ord . ';';
				}
				else {
					$_res .= substr($string, $_i, 1);
				}
			}
			return $_res;

		default:
			return $string;
	}
}

/* vim: set expandtab: */

?>
